For me, Hubksi is about getting access to meaningful content and discussion in a better manner than other aggregator sites.

Hubksi's lets you follow posters instead of subjects, with the idea that following posters whose content you enjoy yields consistently better reading than say, following a subreddit and just getting what gets upovoted the most. If I follow someone who posts good articles on tech, I get the approximation of following a 'tech' subreddit (since that is a major interest of that poster), but also gain a bit of serendipitous discovery as I read what other articles that poster sprinkles in.

That's been my experience anyway. Every poster has a kind of core subject or two they like to post about, with smaller sattelite subjects.

I also like Hubski's stunted upvote system. It gives you a little bit of positive feedback as the hubwheel ticks up as people like your comment or share your post, -but then it stops. Puts an end to all that Reddit nonsense where everybody jumps in to make the first pun they can and have the first half of the page just be an endless stream of puns moving to the right. Cuts down on the crap.

mk can offer the best insight, but this is what Hubski is for me. It's a little quiter than other sites at the moment, but based on the people that I follow, I always have good front page reading. I look forward to an ever increasing amount of discussion, and am glad that has been increasing since the site's inception :)

I could go on, but that's just a quick overview. You should just lurk a bit!